In the future urban "Floating City" where memories can be edited, deleted and traded, Lin Mo, a top memory tuner, is famous for his calm and precise skills. He regards memory as programmable data and emotions as adjustable variables, and he can trim the painful past for clients with ease. However, a "ghost memory" sent by an anonymous commission allowed him to experience warmth and pain that was not his own but was extremely real. This memory fragment is like a key, opening up his dusty past and the city's deepest secrets. In order to find "himself", Lin Mo embarked on a dangerous journey upstream and against the entire memory empire.
